>Hi all, can anyone explain to me why silver plating is used to
>decrease loses in tank circuits and so on.
Above 100MHz, silver plating is probably worthwhile. A lower
frequencies, polished copper with a coating of polyurethane varnish seems
to do okay.
>Looking at the figures
>there seems to be a very small difference in resistivity and skin
>depth between silver and copper. Is is to reduce losses due to
>tarnishing perhaps?
>
>Thanks, Fraser G4BJM
>
Silver oxide as well as silver sulphide (tarnish) are good conductors.
Copper oxide is not.
Rich---
R. L. Measures, 805-386-3734, AG6K
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